Continuity mistake: As Rachel is preparing the peanut butter and jelly sandwiches, she places the knife on top of the open PB jar in a closeup, but in the very next shot the knife has disappeared, then reappears again. (01:23:15)
Visible crew/equipment: When Rachel pulls up to the crime scene where Jake was killed, as she gets out of the car you can see a grid of set lights reflected in the car window door. (00:12:30)
Continuity mistake: When Rachel goes in to Max's bathroom, all the water falls down from the ceiling drenching everything, but then Max comes in, and takes a dry brown towel off the rail to wrap around Aidan. The white towels behind them are bone dry too. (00:46:05)
Continuity mistake: Rachel prepares some peanut butter and jelly sandwiches, then brings them into the lounge. She then takes a bite out of it. Then, when she takes the second bite, the first bite she took has gone. (01:24:10)
Audio problem: When the deer are all grunting at Rachel and Aidan, the whistle of an elk can be heard despite the fact there are no elk in the scene. (00:30:40)
Continuity mistake: When Rachel takes her first bite from the peanut butter and jelly sandwich, in the wideshot she is chewing her bite. Then it cuts to the closeup of her, the food is suddenly gone from her mouth. (01:24:05)
Continuity mistake: When Rachel is in the basement looking through the book and sees the newspaper article, if you pause the film when the article appears close up, you can read some of the article. This article has nothing to do with the title and photo caption above it, about the young girl in the bathtub, it appears to be about something political. The filmmakers assumed the article would flash by too fast for the viewer to read. (01:03:35)
Visible crew/equipment: When Rachel starts to climb out of the well water onto the well wall, in the closeup of her left side as she lifts herself out of the water, a long white cord/wire hangs straight down her left side from her shirt to her pants. (01:36:05)
Continuity mistake: Near the beginning, Hayden is sitting at the desk in his room and his shirt collar is wide open. His neck shows, but that's it. A moment later, when he leaves his room, and comes into the Kitchen, he wears a light grey t-shirt under the other shirt. (00:09:05)
Continuity mistake: After Rachel pulls Aidan out of the bath near the end (before she face Samara) as she tries to wake him up, in one shot she places her hand on his face and shouts his name. In the next shot her hand is now on his neck. (01:28:40)
Continuity mistake: When Rachel is talking to Aidan at dinner, the position of her hair changes a few times. In one shot she pushes her hair behind her right ear, yet in the next shot her hair is pushed behind her left ear instead. (00:09:50)
Revealing mistake: When Hayden is talking to the Psychiatrist in the Hospital, he is wearing some type of white powder face makeup to make him appear more "ghostly". This makeup was only applied to his face. Whenever they show a side shot of his face and neck during this scene, you can see the demarcation (line) of where the white powder face makeup ends and his natural darker tan neck begins. (01:05:20)
Continuity mistake: During the scene where Rachel puts Aidan into the bathtub at Max's house, he is wearing very light white boxer underwear as he is being put into the water. A little while later when Rachel pulls Aidan out of the bathwater, he is suddenly wearing very dark blue/navy colored boxers. Although water would darken the color somewhat, this is far too dramatic a change to be natural. The lighter color couldn't have possibly darkened to that extent. They are two different pairs of boxers. (00:41:55 - 00:48:10)
Continuity mistake: When Rachel falls down into the well, she has her arms up on the wall and on her right hand there appears to be a leaf or large insect or some kind. The shot changes several times, and the object keeps disappearing and reappearing. (01:31:30)
Continuity mistake: When Rachel has the dream of Aidan telling her to kill him, there is a shot where Rachel looks as if she is about to stroke his face, and the next shot her hand is not on Aidan. (01:20:50)
Continuity mistake: When Rachel is trying to get Emily to speak to her at the police station, near the end of her attempt the shots alternate from closeups to wider views. In the closeups, Emily's hair is very messy and tangled but in wider views it is much neater and straightened. (00:16:35)
Continuity mistake: When Rachel begins to brake her car after seeing the deer on the road, as the shots keep changing the markings on the road also keep changing. In overhead shots the markings are a single broken yellow line, but in closeups of the wheels, the markings are solid double yellow lines. (00:30:40)
Continuity mistake: When Rachel pulls up to the old Morgan house she parks her vehicle on the gravel drive, angled into some tall grass. Yet when she leaves the house with the book, the vehicle is now parked halfway on the main road and is no longer angled (but is now much straighter) and is not facing any tall grass. (00:55:35 - 01:01:50)
Factual error: The Daily Astorian office where Rachel works has the Columbia River in the background, however the real Daily Astorian office is located well off the waterfront. (00:10:15)
Continuity mistake: When Rachel is trying to get into the girl's house, she isn't wearing gloves, but when she is flipping over the rocks she is.
Answer: The deer were attacking the car because Aiden was in the car. Aiden was possed by Samara at the time and Samara makes animals go crazy.